CdO decorated CdS nanorod for enhanced photocatalytic reduction of CO to CO

• Published in: RSC advances Vol. 13; no. 25; pp. 17362 - 17369
• Main Authors: Zhang, Zhe, Kong, Fanhao, Yuan, Bizhen, Liao, Yinnian, Ren, Xiue, Hou, Yu
• Format: Journal Article
• Published: 09.06.2023
• ISSN: 2046-2069
• DOI: 10.1039/d3ra02739b

Solar-driven CO 2 reduction into fuels and sustainable energy has attracted increasing attention around the world. However, the photoreduction efficiency remains low due to the low efficiency of separation of electron-hole pairs and high thermal stability of CO 2 . In this work, we prepared a CdO decorated CdS nanorod for visible light driven CO 2 reduction. The introduction of CdO facilitates the photoinduced charge carrier separation and transfer and acts as an active site for adsorption and activation of CO 2 molecules. Compared with pristine CdS, CdO/CdS exhibits a nearly 5-fold higher CO generation rate (1.26 mmol g −1 h −1 ). In situ FT-IR experiments indicated that CO 2 reduction on CdO/CdS may follow a COOH* pathway. This study reports the pivotal effect of CdO on photogenerated carrier transfer in photocatalysis and on CO 2 adsorption, which provides a facile way to enhance photocatalytic efficiency. A CdO decorated CdS nanorod facilitates photoinduced charge carrier separation and transfer and acts as an active site for the adsorption and activation of CO 2 molecules, and as a result enhances the visible light driven CO 2 reduction.